Home / 20,379,431.08-28,123,613.92-11,211,877

Finding the Fourth Proportional to 20,379,431.08, 28,123,613.92 and 11,211,877

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Solution

The fourth proportional to 20,379,431.08, 28,123,613.92 and 11,211,877 is: 15,472,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,379,431.08 : 28,123,613.92 = 11,211,877 : x
  2. Step 2: Convert to fraction form
    20,379,431.08/28,123,613.92 = 11,211,877/x
  3. Step 3: Cross multiply
    20,379,431.08x = 28,123,613.92 × 11,211,877
  4. Step 4: Simplify right side
    20,379,431.08x = 315,318,500,066,527.88
  5. Step 5: Solve for x
    x = 315,318,500,066,527.88/20,379,431.08
  6. Step 6: Final answer
    x = 15,472,389.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.